Grain separating machine



June 9, 1931. w. T. PIERCE GRADI SEPARMING MACHINE 2 sheets-sneer 1Filed Aug. 17, 192e Wir/Jb@ June 9, 1931. w. T. MERCE 1,808,863

GRMNsEPARATnyG MACHINE FndAug. 17, 1928 2 sheets-sneer 2 iig- smoothfaced grains and will ings, in'which Patented June 9, 1931 g UNITEDSTATES PATENT OFFICE A GRAIN SEPARATING NIACHINIE) Application ledAugust 17, 1928, Serial The invention relates to improvements in grainseparating machines and an object of the invention is to provide amachine which will effectively separate bearded grains from dischargethe separated grains at opposite ends .of the machine.

A further object of the invention is to provide a machine utilizingrotatable cylindrical drums having their inner faces lined with a clothor such like material presenting considerable nap and agitated troughsor chutes within the drums adapted to receive and discharge the beardedgrains carried up by the drums and scraped therefrom by stationaryscrapers provided.

A further object is to construct the machine so that it can be readilyassembled and such that it will have considerable separating capacity.

A still further object is to construct the machine wherein the drums aremounted in a novel manner and wherein the chutes employed are suspendedwithin the drums for reciprocating movement, such facilitating thetravel of the grain within the chutes.

With the above more important objects in view, the invention consistsessentially in the arrangement and construction of parts hereinaftermore particularly described, reference being had to the accompanying`drawig. 1 is a view of the front end of the machine.

Fig. 2 is a view of the rear end of the machine.

Fig. 3 is a vertical sectional view longitudinally and centrally throughthe machine,

certain parts being shown in side elevation. Fig. 4 is a plan view ofthe front endof the machine.

In the drawings like characters of reference indicate correspondingparts in the several figures.

The machine frame comprises the customary corner legs 1 connected bysuitably located end strips 2 and suitably located side strips 3, theend strips at the front end of the machine being somewhat closertogether than those at the rear and the side strips be- No. 300,354, andin Canada May 5, 1928.

ing` inclined as shown to connect the 'end strips. On the rear end ofthe machine, I mount a suitable grain receiving feed Vhopper 4 which isprovided with a feed opening 5 cont-rolled by a hand regulated slidinggate 6. VThe machine as herein shown embodies three similar rotatablymounted separating drums or cylinders but I wish it t-o be understoodthat a greater or less number of these could be used without departingfrom the spirit of-the invention. Within the upper part of the frame, Ilocate a pair of upper cylinders or drums 7 and 8 having open ends andof considerable diameter, the drums having` their ends suitablyreinforced by external ribs 9 and 10 and their interior walls lined witha cloth, carpet or such like. lining 11 presenting a considerable nap.The drums are revolvably supported by three similar parallel rollers 12,13 and 141 extending longitudinally of the machine and incliningupwardly from the front to the rear, the rollers being carried by shafts15, 16, and 17 rotatably mounted in end bearings 18 carried by thecentrally located end boards 2. The rollers are all provided adjoiningthe front end of the machine with comparatively deep outstandingflanges 19 and these flanges prevent the drums from end shiftingforwardly. 'Ihe drums actually ride the rollers and upon the rollersbeing rotated in amanner later described, 'the drums will besimultaneously rotated by frictionalrcontact with the rollers.

Centrally underneath the upper pair of drums, I locate a similar lowerdrum or cylinder y2O provided with a nap lining and supported by twoparallel inclining rollers 21 and 22 having the shafts 23 and 24 thereofrotatably mounted in suitable end bearings 25 carried by the end boards.It will be observed that the drum 2O is inclined in the oppositedirection tothe upper drums and that the lower rollers are provided withend flanges 26 to prevent the lower drum shiftingv towards the rear endof the machine.l Two similar feed spouts 27 and 28 are carried by theframe and are adapted to feed grain from the hopper into the rear orupper ends of the upper drums 7 and 8. A collectmore or less centrally fy. ing pan 29 carried by the frame under'lies the wheel 48 and a disc49,

forward ends of the cylinders 7 and 8 and two grain spouts 30 and 3llead from this pan and discharge into the lower cylinder 20.

The rear end of the frame is supplied with a short stub shaft 32 onwhich I rotatably mount a chain wheel 33, the chain wheel being suppliedwith an operating handle. or crank 34. The rear ends of the shafts l5,IG, 17, 23 and 24 are all supplied with similar chain wheels 35 and an.endless chain 3G passes around these latter chain wheels 35 in a mannerbest shown in Figurev 3, the arrangement being such that when the cranky 34 is turned, the rollers are all simultaneously rotated and thecylinders are consequently turned.

Within each of the upper cylinders, I locate a grain chute 3T whichgrain chutes are inclined in the same direction as the cylinders and aresupported there within for reciproeatingk movement. The front end ofeach chute is pivotally carried by a pair of downwardly extending sidearms 38 and'39 which have their lower end pivotally connected to abracket 40 permanently secured centrally to an end board 2. The forwardends of the upper chutes are pivotally swung from a cross arm 4l carriedby a vertical spindle 42, the spindle having the ends thereof rotatablymounted in bearings 43 carried by the end boards. In the presentinstance, the ends of the cross arm are down turned and are passedrotatably through a cross strap 44 secured to the end of the chute andbeneath theY cross strap, I place a washer 45 and a retaining pin 46.y

The front end of the machine is supplied at one of the upper cornerswith a relatively short spindle 47 rotatably carried by the frame and`on the spindle, I mount a chain the chain wheel being driven by a chain50 operating over a further chain wheel 5l secured to the forward end ofthe shaft i7 The disc carries an eccentric pin 52 which is connected bya pitman 53 to a crank 54 carried by the upper end of the spindle 42,the arrangement being such that the spindle is cscillated backwardly andforwardly in the rotation of the disc and the cross arm causes thereciprocation of the chutes 37.

The lower cylinder is also provided with a chute 55 which is inclined inthe opposite direction to the drum 2O and passes centrally therethrough.The rear end of the latter chute i-s pivotally attached to thehorizontally disposed end 56 of an arm 57, the arm having the lower endpivotally attached at 58 to the lower end board 2. A vertical spindle 59is rotatably carried in suitable bearings 60 mounted on the rear endboards'of the frame and the spindle carries a crank arm 6l whichpivotally supports the rear end of the lower chute in the same manner asthe upper chutes 'as rods passing ing frame, a pair of are supportedfrom the cross arm. The lower end of the spindle 42 and the upper end ofthe spindle 59 are both supplied with cranks 62 and 63 and the cranksare pivotally connected by a cross bar G4, the arrangement being suchthat the lower' chute is reciprocated simultaneously with the upperchutes.

In order to scrape or free the grains caught in the nap of the cylinderlinings, I have provided stationary scrapers 65 herein shownlongitudinally of the cylinders and contacting with the lining, the rodsbeing suitably carried by the frame and being positioned so that theyeach overlie one side of the adjoining chute. The machine can be drivenby a belt if desired at which time, the crank 34 would be dispensed withand a pul-V ley supplied for driving purposes.

When the machine is to be used, one adjusts the gate to feed the graininto the upper cylinders and drives the chain wheel 34 by rotating thecrank. The rollers are all simultaneously rotated and effect therotation of the drums in the same direction. rlhe bearded grains andother small weed seeds and foreign' material will be caught in the napof the lining of the upper cylinders and will be carried up towards thescrapers whilst the non-bearded and free sliding grain seeds willgravitate down the upper cylinders and will be discharged from the frontends thereof into the underlying pan 29. rIhose seeds which are carriedup by the lining of the cylinders will fall downand be caught in thechutes 37, the Scrapers serving to free such grains from the nap. Thematerial caught in the chutes will be passed out the forward end of themachine, their movement being facilitated by the recprocation of thechutes. The grain caught in the pan 29 will be dis-4 charged in thelower cylinder and here a further separation takes place, the freerunning grains gravitating down the cylinder and beingl discharged overthe chute 65 located at the rear end of the machine while those lodgedand caught in the nap of the lining will be thrown into the lower chute66 and discharged out the front end of the machine. f `What I claim asmy invention is :-,-l

In a grain separating machine, a supportupper similarly inclinedcylindrical drums rotatably supported from the frame and arranged sideby side and both having a lining presenting considerable nap, a `hopperoverlying the upper ends of the drums, feed chutes leading from thehopper into the ends ofthe drums, a centrally located rotatably mountedoppositelyinclining drum underlying the former drums and ro# tatablycarried by the frame, said latter drum having a lining presentingconsiderable nap, means for collecting grain discharging from the lowerends of the upper drums anddelivering the same into the upper end of thelower drum, means for simultaneously rotating the drums, similar graincollecting and discharge chutes extending longitudinally of the drums,means supporting the rear ends of the upper chutes and the front end ofthe lower chute from the frame for oscillatory movement, a Verticalspindle rotatably mounted centrally on the rear end of the frame betweenthe adjacent projecting ends of the upper chutes, a horizontallydisposed cross arm secured to the spindle and having the extending endsthereof overlying and swivelly attached to the adjacent ends of thechutes, a further vertically disposed spindle rotatably carried by therear end of the frame and located to the side of the adjacent projectingend of the lower chute, a crank arm extending from the latter' spindleand overlying and pivot-ally attached to the lat-ter end of the latterchute, lcranks secured to the adjacent ends of the spindles, a linkpivotally connecting the latter cranks, a crank secured to the upper endof the central spindle, means for oscillating the latter crank tosimultaneously reciprocate the shoes and a scraper carried by the frameand tudinally of each the lining thereof chutes.

Signed at Town of Birtle in Manitoba this 6th day of February, 1928.

WILLIAM THOMAS PERCE.

extending longidruln and contacting With in a location overlying the

